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| 1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 45 virtual ~AstString() {} | 45 virtual ~AstString() {} |
| 46 | 46 |
| 47 virtual int length() const = 0; | 47 virtual int length() const = 0; |
| 48 bool IsEmpty() const { return length() == 0; } | 48 bool IsEmpty() const { return length() == 0; } |
| 49 | 49 |
| 50 // Puts the string into the V8 heap. | 50 // Puts the string into the V8 heap. |
| 51 virtual void Internalize(Isolate* isolate) = 0; | 51 virtual void Internalize(Isolate* isolate) = 0; |
| 52 | 52 |
| 53 // This function can be called after internalizing. | 53 // This function can be called after internalizing. |
| 54 V8_INLINE Handle<String> string() const { | 54 V8_INLINE Handle<String> string() const { |
| 55 ASSERT(!string_.is_null()); | 55 DCHECK(!string_.is_null()); |
| 56 return string_; | 56 return string_; |
| 57 } | 57 } |
| 58 | 58 |
| 59 protected: | 59 protected: |
| 60 // This is null until the string is internalized. | 60 // This is null until the string is internalized. |
| 61 Handle<String> string_; | 61 Handle<String> string_; |
| 62 }; | 62 }; |
| 63 | 63 |
| 64 | 64 |
| 65 class AstRawString : public AstString { | 65 class AstRawString : public AstString { |
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| 170 | 170 |
| 171 bool BooleanValue() const; | 171 bool BooleanValue() const; |
| 172 | 172 |
| 173 void Internalize(Isolate* isolate); | 173 void Internalize(Isolate* isolate); |
| 174 | 174 |
| 175 // Can be called after Internalize has been called. | 175 // Can be called after Internalize has been called. |
| 176 V8_INLINE Handle<Object> value() const { | 176 V8_INLINE Handle<Object> value() const { |
| 177 if (type_ == STRING) { | 177 if (type_ == STRING) { |
| 178 return string_->string(); | 178 return string_->string(); |
| 179 } | 179 } |
| 180 ASSERT(!value_.is_null()); | 180 DCHECK(!value_.is_null()); |
| 181 return value_; | 181 return value_; |
| 182 } | 182 } |
| 183 | 183 |
| 184 private: | 184 private: |
| 185 friend class AstValueFactory; | 185 friend class AstValueFactory; |
| 186 | 186 |
| 187 enum Type { | 187 enum Type { |
| 188 STRING, | 188 STRING, |
| 189 SYMBOL, | 189 SYMBOL, |
| 190 NUMBER, | 190 NUMBER, |
| 191 SMI, | 191 SMI, |
| 192 BOOLEAN, | 192 BOOLEAN, |
| 193 STRING_ARRAY, | 193 STRING_ARRAY, |
| 194 NULL_TYPE, | 194 NULL_TYPE, |
| 195 UNDEFINED, | 195 UNDEFINED, |
| 196 THE_HOLE | 196 THE_HOLE |
| 197 }; | 197 }; |
| 198 | 198 |
| 199 explicit AstValue(const AstRawString* s) : type_(STRING) { string_ = s; } | 199 explicit AstValue(const AstRawString* s) : type_(STRING) { string_ = s; } |
| 200 | 200 |
| 201 explicit AstValue(const char* name) : type_(SYMBOL) { symbol_name_ = name; } | 201 explicit AstValue(const char* name) : type_(SYMBOL) { symbol_name_ = name; } |
| 202 | 202 |
| 203 explicit AstValue(double n) : type_(NUMBER) { number_ = n; } | 203 explicit AstValue(double n) : type_(NUMBER) { number_ = n; } |
| 204 | 204 |
| 205 AstValue(Type t, int i) : type_(t) { | 205 AstValue(Type t, int i) : type_(t) { |
| 206 ASSERT(type_ == SMI); | 206 DCHECK(type_ == SMI); |
| 207 smi_ = i; | 207 smi_ = i; |
| 208 } | 208 } |
| 209 | 209 |
| 210 explicit AstValue(bool b) : type_(BOOLEAN) { bool_ = b; } | 210 explicit AstValue(bool b) : type_(BOOLEAN) { bool_ = b; } |
| 211 | 211 |
| 212 explicit AstValue(ZoneList<const AstRawString*>* s) : type_(STRING_ARRAY) { | 212 explicit AstValue(ZoneList<const AstRawString*>* s) : type_(STRING_ARRAY) { |
| 213 strings_ = s; | 213 strings_ = s; |
| 214 } | 214 } |
| 215 | 215 |
| 216 explicit AstValue(Type t) : type_(t) { | 216 explicit AstValue(Type t) : type_(t) { |
| 217 ASSERT(t == NULL_TYPE || t == UNDEFINED || t == THE_HOLE); | 217 DCHECK(t == NULL_TYPE || t == UNDEFINED || t == THE_HOLE); |
| 218 } | 218 } |
| 219 | 219 |
| 220 Type type_; | 220 Type type_; |
| 221 | 221 |
| 222 // Uninternalized value. | 222 // Uninternalized value. |
| 223 union { | 223 union { |
| 224 const AstRawString* string_; | 224 const AstRawString* string_; |
| 225 double number_; | 225 double number_; |
| 226 int smi_; | 226 int smi_; |
| 227 bool bool_; | 227 bool bool_; |
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| 335 const AstRawString* name##_string_; | 335 const AstRawString* name##_string_; |
| 336 STRING_CONSTANTS(F) | 336 STRING_CONSTANTS(F) |
| 337 #undef F | 337 #undef F |
| 338 }; | 338 }; |
| 339 | 339 |
| 340 } } // namespace v8::internal | 340 } } // namespace v8::internal |
| 341 | 341 |
| 342 #undef STRING_CONSTANTS | 342 #undef STRING_CONSTANTS |
| 343 | 343 |
| 344 #endif // V8_AST_VALUE_FACTORY_H_ | 344 #endif // V8_AST_VALUE_FACTORY_H_ |
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